Glass making machine with dual cylinder press plungers



March 5, 1957 c. A. E. JoHNsoN 2,783,591

GLASS MAKING MACHINE WITH DUAL CYLINDER PRESS PLUNGERS Filed Dec. 5.1955 5 sheets-sheet 1 March 5, 1957 c. A. E. JOHNSON 2,783,591' Y GLASSMAKING MACHINE WITH DUAL CYLINDER PRESS PLUNGERS Filed Dec. 5. 1955l 5sheets-sheet 2 March 5, 1957 c. A. E. JOHNSON A 2,783,591

GLASS MAKING MACHINE WITH DUAL CYLINDER PRESS PLUNGERS Filed DGO. 5.1955 l 5 She'StS-Shet 3 March 5, 1957 c. A. E. JOHNSON 2,783,591

. GLASS MAKING MACHINE WITH DUAL CYLINDER PRESS PLUNGERS Filed Dec.5.-l955 5 Sheets-Sheet 4 C. A. E. JOHNSON March 5, 1957 GLASS MAKINGMACHINE WITH DUAL CYLINDER PRESS PLUNGERS 5 sheets-sheet 5 Filed Dec. 5.1955 N N N (Zar/e5 NNN NNN

. l 2,783,591 Ice f kPatented Mar.. 5, 1%57 GLASS MAKING MASHINE WITHDUAL CYLER PRESS PLUNGERS Charles A. E. .iohnsom Anderson, Ind.,assigner to liynch Corporation, Anderson, Ind., a corporation of IndianaApplication December 5, 1955, Serial No. 550,876

25 Claims. (Ci. 49-38) This invention relates to a glassmaking machinehaving dual cylinder press plungers.

One object of the invention is to provide an arrangement ofhydraulically operated press plungers for a glassmalting machine inwhich two articles at a time can be pressed at a pressing station of themachine by an arrangement of two press plungers to enter a pair of moldsand press the ware therein to shape, the plungers being individuallyhydraulically controlled and coordinated in their action byinter-connected hydraulical motors in the hydraulic supply lines to thecylinder and piston mechanisms that operate the plungers, the motorsbeing disconnectable in case only one of the plungers is to be used.

Another object is to provide cylinder and piston operating means for theplungers which include supporting mechanism for guide rings that coactwith the molds ahead of the plunger press operation and are held incontact with the molds by reason of hydraulic pressure trapped inaccumulators so that the plungers can continue their movement andperform press and dwell operation by further movement of the pistons inthe cylinders, and will subsequently and sequentially raise the plungersfrom Contact with the ware and release the guide rings from the moldsand elevate them away therefrom.

Still another object is to provide a pneumatically controlled hydrauliccircuit for the operation of the plungers.

A further object is to provide kick-up mechanism at the take-out stationof the glassware forming machine for elevating the ware out of the moldso .that take-out tongs can cooperate therewith for removing the warefrom the machine.

Still a further object is to provide the plunger actuating mechanismwith adjustment for different sizes of ware, and the kick-up mechanismalso adjustable to take care of variations in ware size.

With these and other objects in view, my invention consists in theconstruction, arrangement and combination of the various parts of myglassmaking machine having dual cylinder press plungers, whereby theobjects above contemplated are attained, as hereinafter more fully setforth, pointed out in my claims and illustrated in detail on theaccompanying drawings wherein:

Fig. 1 is a plan view of a glassmaking machine with dual cylinder pressplungers embodying my present invention;

Fig. 2 is a front elevation thereof on a reduced scale with a portion ofthe i'gure shown in section on the line 2 2 of Fig. l;

Fig. 3 is a plan view of an adjustable kick-up mechanism as taken on theline 3 3 of Fig. 2;

Fig. 3A is a vertical sectional view on the line 3A-3A of Fig. 3 showingthe kick-up mechanism adjusted for maximum throw;

Fig. 3B is a similar sectional view showing the relative position ofparts when adjusted for minimum throw' Fig. 4 is a partial verticalsectional View of the machine on the line 4-4 of Fig. 2, the scale beingincreased over both Figs. l and 2;

Fig. 5 is a hydraulic and air circuit diagram of part of the machine;

Fig. 5A is a continuation of the right hand end of Fig. 5 and shows thehydraulic and air diagram for the rest of the machine; and

Fig. 6 is a typical timing diagram for the operation of the machinedisclosed.

On the accompanying drawings I have used the refeience numeral 10 toindicate the base on which the mechanism of my glass making machine ismounted, the base being wheel-mounted as indicated at 12 (see Fig. 2).The base 10 has a bottom plate 14 which supports a center post 16 and asuitable anged hub 17.

A table 18 has a hub- 20 which is rotatably mounted by means of a lowerbearing 22 and an upper bearing 24 on the center post 16. A pair ofout-posts 26 and 28 are also mounted on the base 10 and are connected bymeans of a triangular head 30 with the center post 16. The head 3d isvertically slidable for adjustment purposes on the posts 16, 26 and'28.

To secure adjustment- I thread each of the posts 16, 26 and 28 asindicated at 32 (see Fig. 4) and on the threads of the post 26A I screwa worm gear nut 34. This nut has a sprocket 36 connected therewith. Onthe threads ot' each of the posts16 and 28 is a sprocket nut 38 and asprocket 36. The worm gear nut 34 and the two sprocket nuts 38 areconnected together for simultaneous rotation by a chain 40 extendingaround the three sprockets 36. A guard 41 is provided for the chain 40.

A worm i2nieshes with the worm gear nut 34 as shown in Fig. 4 and ismounted on a worm shaft 44 located within a housing 48 for the Vwormgear nut and the worm, and has a squared end 50 outside of the housingas shown in Fig. l so that an adjusting crank can be connected therewithfor rotating the shaft 44. Before adjustment, lock nuts 46 011 each ofthe threads 32 above the head 30 must be loosened and after adjustment,they may be retightened to insure that the head remains in the positionto which it was adjusted. The purpose of the adjustment is to adapt themachine to the pressing of ware of diderent heights.

The table 18 is provided with mold receiving holes V52 to receiveVarious molds 54 in aninterchangeable man.- ner. For cooperation witheach ware mold 54 is a ware plunger 56 (see Fig. 2) and the supportingmechanism for these plungers will be described later.

At a charging station of the machine ahead of the head 30 (the directionof rotation in Fig. l being clockwise) are funnels 58 for receiving gobsof glass fromy the glass melting furnace. These gobs of course, aresheared off at properly timed intervals in relation to the table E8which is rotated intermittently in the usual manner. A series of nozzles60 and 62 is provided for cooling the inner circleu of molds S4 andanother series of nozzles 64 and 66 is provided for cooling the outercircle of molds. These nozzles receive air from the hollow interior 70of the table 18 to which air is supplied from an air supply intake 68.Suitable dampers are provided as illustrated to properly control andproportion the air as required by the particular ware being pressed inthe machine.

The drive motor for the table 13 is shown at 72 in Fig. l and through avariable speed drive 74, drives the Geneva mechanism for actuating thetable 18. This, however, is conventional and forms no part of my presentinvention. Accordingly, it is not illustrated in detail. A timer '76 isshown for timing various Valves of the machine as will hereinafterappear and it is also driven by the motor 72.

In the particular machine illustrated glass is pressed agresser underthe head by a mechanism which is the main portion of my invention andwill be described later. The pressed ware then rotates under a manifold78 having cooling nozzles 80 and supplied with air from an air supplyintake 82. l

After the ware'is cooled it rotates to a position under a supporting arm84 for a take-out shaft 86. Suitable gearing in a housing S8 is providedfor rotating the shaft 86 intermittently in synchronism withintermittent rotation of the table 18. Take-out arms 90 extend from theshaft 86 and terminate in take-out mechanisms 94. These mechanisms arefor actuating take-out tongs 92 carried thereby, all in a conventionalmanner forming no part of my present invention. Ejection plungers 96 arecarried by each mold 54, however, and I provide a kick-up means foroperating these which forms part of my invention and will later bedescribed.

The supporting mechanism -for the plungers 56 is shown particularly inFig. 4 and comprises a plunger head 98 to which the plunger is securedby a plunger retaining ring 100. A piston rod 102 extends upwardly fromthe head 98 and has a plunger piston 104 thereon located in a plungercylinder 106. The piston rod and piston have an extension piston rod 108projecting upwardly through the top cylinder head 110 for the cylinder106.

A guide ring 112 is provided for guiding coaction with the mold 54 asshown at the bottom of Fig. 4 and is supported by guide ring actuatingrods 114. These rods extend slidably through a bracket 116 provided toprevent rotation of the piston rod 102, the bracket being contined tovertical sliding movement relative to the posts 26 and 28. The rods 114connect at their upper ends to a guide ring cylinder 120 in which aguide ring piston 122 is vertically slidable. A port 124 is providedthrough the piston rod 102 to communicate with the cylinder 120 belowthe piston 122 and connects with the lower end of a passageway 126extending upwardly through the piston rod 102 and its extension 108.This passageway connects at its upper end with an accumulator 128adapted to have hydraulic pressure therein to normally tend to lower theguide ring 112 relative to the head 98 as will hereinafter appear.

To support the table 18 at the pressing position when the plungers 56are lowered into the molds 54, an anvil 130 is vertically reciprocablein a slide-way 132 having a mounting foot 134 secured to the base 10 ofthe machine. A wedge 136 is provided to elevate the anvil 130 intocontact with the table 18 under pneumatic pressure introduced to apiston and cylinder assembly comprising a piston rod 138 extending fromthe wedge 136 and terminating in an anvil piston 140 within an anvilcylinder 142 (see Figs. 2 and 5A).

A kick-up cylinder 144 is also shown in these figures in'which is a pairof kick-up pistons 145 and 146. A piston rod 148 extends upwardly fromthe piston 145 and a tubular piston rod 149 surrounds it and extendsupwardly from the piston 146. A pair ofarms 150 are pivoted on the rod149 and are urged to the position shown in Fig. 3 by springs 154, beinglimited in their swinging motion by stop lugs 153 and a stop pin 160.Adjustable studs 152 extend upwardly from the arms 150 to contact theejection plungers 96 of the molds 54 at the take-out position. A guideyoke 156 is secured to the piston rod 149 and cooperates with a verticalguide bar 158 extending upwardly from a cylinder head 159 to preventrotation of the piston rod and consequently the arms 150 carriedthereby. In the case of an obstruction, however, the arms can swing outof the way as to the dot-anddash line position shown in Fig. 3, andafter the obstruction has passed, they will bebrought back to theirinitial positions by the springs 154 with the lugs 153 engaging vthestop pin 160. The springs 154 have their ends connected with pins 151ofthe arms 150 and pins 157 of the guide yoke 156.

The pistons 145 and 146 are adjustable relative to each other to thusadjust the stroke of the kick-up mechanism depending on the height ofthe ware being made. This is accomplished by having the upper end of thepiston rod 143 threaded and coacting with an internally threaded upperend of the tubular piston rod 149, a lock nut 147 being provided toretain adjustment. To secure adjustment, a lock nut 147 is loosened andthe piston rod 148 is then turned clockwise or counterclockwisedepending on the adjustment desired. This action raises or lowers thepiston 146 relative to the piston 14S, the lowest adjustment andtherefore maximum stroke being illustrated in Fig. 3A and the highestadjustment and therefore minimum stroke being illustrated in Fig. 3B.The stroke is limited in the upward direction by the piston 146 strikingthe cylinder head 159 and in the downward direction by the pistou 145striking a cylinder head 143 at the lower end of the cylinder 144. Thusthe stroke can be adjusted within the range illustrated in Fig. 3A andFig. 3B while minor adjustments may be made by raising or lowering thestuds 152. These studs are provided with lock nuts 141 to retain theadjustment.

Referring to the hydraulic and air circuit diagram of Figs. 5 and 5A,the hydraulic circuit includes an oil tank 162 and a pair of pumps 164and 166 for pressurizing the oil. The pump 164 is of the constantpressure type and the pump 166 is of the constant delivery type. Apressure regulator valve 163 is associated with the pump 164 and apressure relief valve 165 is associated with the pump 166. A return pipe250 through a heat exchanger 252 provided with a by-pass check valve 254extends from the pressure regulator valve 163 back to the tank 162 andthe pressure relief valve 165 has a return pipe 161.

The outlet of the pump 166 delivers oil through a pipe 167 to an oilsupply pipe 168 connected by a pipe 169 with a 4-way valve 170. Theoutlet of the pump 164 delivers oil through a pipe 175 also to the pipe169. Outlet pipes 172 and 174 extend from the valve 170 and connectrespectively with a pair of plunger-down pipes 176 and a pair ofplunger-up pipes 178. Two reversible hydraulic motors 179 are provided,one in each of the plunger-up lines 178. These motors are diseonnectablyconnected together by a coupling 131, thus eliminating any tendency foreither plunger 56 to stay down. By disconnecting the coupling 181,either plunger may be operated independently of the other. Reducing andcheck valves 256 and 258 are interposed between the pipe 172 and the twopipes 176. The pipes 176 connect with the top cylinder heads 110 of thecylinders 166 and the pipes 178 connect with bottom cylinder heads 180thereof. A discharge pipe 182 extends from the valve back to the tank162.

Flow control valves 184, a return pipe 186, check valves 171, 173, 177,18S and 190, an accumulator 194 and a shut-ofi valve 196 are alsoincluded in the hydraulic circuit. For charging the accumulatore 128, Iprovide an accumulator' supply pipe V202 connected with the pipe 175.The pipe 202 extends through a check valve 204 to an accumulator supplypipe 206 from which the oil flows through a manually operable 4-wayvalve 20S and a pressure reducing and check valve 210 to an accumulatorsupply pipe 212. A pressure gauge 211 is connected to the pipe 212 toindicate the pressure therein as ser by the valve 210, and the pipe 212terminates in a shut-olf valve 213 with which is connected a iiexibleaccurnulator` supply hose 214. The hose 214 terminates in a detachablecoupling 216 for a nipple 218 of each accumulator 128, and the couplingcan be successively connected to each of the nipples for charging theaccumulators and the hydraulic systems 126-124-120 connected therewith.A pressure gauge 220 is provided on each accumulator 128 to indicate thepressure in the hydraulic system just referred to. The accumulators arecharged x prior to operation of the machine to the pressure desired forthe particularware to be pressed in the machine.

The pneumatic system for controlling the anvil 130, the pick-up piston146 and the 4-way valve 170 is shown mainly in Fig. A and the operationthereof is diagrammed in Fig. 6. The pneumatic system includes valves ofthe timer 76 which are numbered V6, V7, V9, V10, V11 and V12.

The valves V6 and V7 control the ow of air from an air supply pipe 222to opposite ends of a spool valve 224 to supply air through a pipe 226and a quick exhaust valve 228 (see Fig. 5) to a cylinder 230 having apiston 232 therein and a piston rod 234 to actuate the 4-way valve 170against the action of a return spring 236.

The valves V9 and V10 supply air to opposite ends ot a spool valve 238(as determined by the timer 76) which in turn supplies air to aplunger-up pipe 24d and exhausts it from a plunger-down pipe 242 or viceversa depending on the position of the spool valve.

The valves V11 and V12 supply air selectively to opposite ends of aspool valve 244 which controls the ow of air to an anvil-up pipe 246 andfrom an anvildown pipe 248 or vice versa depending on lthe operation ofthe timer 76 and the consequent operation of the spool valve 244.

Practical operation Fig. 6 diagrams a typical operation for the hereindisclosed glass making machine. In a 360 or complete cycle, the table 18is indexed one station by the Geneva movement and during this cycle, 150vof a complete revolution is devoted to the index period and 210 to thedwell time. On an average the cycle consumes about one second of time asindicated in the diagram, although this of course is adjustabledepending usually on the size of the ware. Likewise the plunger, thekick-up and the anvil operations, and the timer 76 (by adjusting thevariable speed drive 74 for the timer) are adjustable.

During a cycle of operation, a mold 54 which during the previous cyclereceived a gob of glass from the funnel 58 arrives at the pressingstation under the head 31B at 150. Slightly before this or just after .4second, the plunger 56 starts downwardly due to opening of the valve V7which permits air to enter the spool valve 224 to throw it to theposition shown in Fig. 5A. This results in air from the line 222 passingthrough the line 226 to the cylinder 230 in Fig. 5 to force the piston232 forwardly to the position shown thus reversing the 4-way valve 179against the action of the spring 236 and sending oil under pressurethrough 172, 256, 258 and 176 to the heads 111i above the pistons 104 inthe cylinders 106. At this time the pistons 122 are at their upperlimits of movement by reason of the oil from the accumulators 12S beingcommunicated through the passageways 126 and the ports 124 to thecylinders 126 below the pistons 122.

When, during the downward travel of the piston rod 1&2, the guide rings112 coact with the molds 54 as in Fig. 4, the pistons 122 will continueto move downwardly under the action of the hydraulic pressure above thepistons 104 and whatever pressure is in the accumulators 12S is thusimposed on the guide rings 112 to assure their firm seating in the moldsS4 while the plungers 56 move further downwardly for the press and dwelloperations.

Initial contact of the guide rings 112 with the molds 54 happensaccording to Fig. 6 just after .6 second whereupon the plunger S6 ispressed into the glass in the mold 54 for about another second indicatedplunger press (this being during movement of the piston 122 downwardlyin the cylinder 121) to the position shown in Fig. 4.) Then before theplunger again goes up, it remains during the plunger dwell period untiljust before the .8 second indication whereupon the valve V6 sends .airfrom 222 to the left hand end of the spool valve 224 thus exhausting theline 226 so that the piston 232 returns in its cylinder 230 under theaction of the spring 236, a ,quick exhaust valve 228 entering into thisoperation to insure a quick return of the 4way valve 170 from theprevious position to the new position where it lets the oil out of theline 172 through the return line 182 and introduces oil to the line 174for flow through 188 and 17S to the bottom cylinder heads 130. The oilin these heads acts on the lower surfaces of the pistons 104 to retractthe pistons from the position shown in Fig. 4 to the position shown inFig. 2 thus completing the1 cycle. The table 18 is then indexed for thenext cyc e.

When the molds 54 are indexed to the take-out position under the arm 84,the valve V9 just after the beginning ofthe Geneva dwell time (at about.43 second* Fig. 6) is opened for reversing the spool valve 238 so thatair from the line 222 can tlow through 240 and thence to the cylinder144 under the piston 146 therein for elevating the studs 152 intoengagement with the ejection plungers 96 to thus lift the pressed wareso that it can be grasped by the take-out tongs 92. The tongs thenrotate the ware through 180 and are opened to release t-he ware and setit on the usual take-out conveyor leading to the annealing lehr. Justbefore the end of the dwell time, (at about .93 second) the valve V1@opens for reversing the spool valve 238 to the position shown to propelthe piston 146 downwardly so that the studs 152 :are out of the way forthe next index of the table.

Since there is considerable pressure during the ware pressing operation,anvil is provided at the pressing station and is elevated as a result ofopening of the timer valve V11 just before the plunger reaches the glass(about .42 second). The anvil is lowered again just before thecompletion of the cycle by opening of the valve V12 (at about .93second). These two valves V16 and V11 opcrate the spool valve 244 (inthe manner already described in connection with the spool valves 224 and233) for propelling the wedge 136 forwardly and thus raising the anvil1341 and for propelling the wedge rearwardly and thus lowering the anvilrespectively.

As above indicated, one of the press plungers may be adjusted to remaininactive when it is desirable to operate the machine single gob insteadof `double gob. This is accomplished by closing ow control valve 184 forthat plunger and uncoupling the coupling 181 betweenA the hydraulicmotors 179. The Single plunger will then operate in the same manner .asdescribed in connection with both plungers, utilizing the pressure inits respective accumulator 128 for holding the guide ring 112 in contactwith the mold 54 during the plunger press and plunger dwell periods. Inview of this possible adjustment, some of my claims are not limited to adual plunger arrangement.

Some changes may be made in the construction and arrangement of theparts of my glass making machine with dual cylinder press plungerswithout departing from the real spirit and purpose of my invention, andit 'is my intention to cover by my claims any modied forms of structureor use of mechanical equivalents which may reasonably be included withintheir scope.

I claim as my invention:

1. In a glassware forming machine having an indexable table and aplurality of glassware forming molds carried thereby and arranged inpairs at circumferentially spaced stations of said table, a dual pressplunger mechanism comprising a supporting head mounted above said tableand having a pair of cylinders, a piston in each of said cylinders, apiston rod extending downwardly from eachof said pistons, a plungersupported by each of said piston rods and adapted to enter the molds,one pair at a time, a second cylinder slidable on each of said pistonrods, a guide ring supported by each of said second cylinders, a secondpiston on said piston rod within each of said second cylinders,accumulator means providing constant pressure in said second cylindersbelow the second pistons therein, a source of hydraulic pressure, meansfor supplying hydraulic pressure from said source each cycle ofoperation of the machine to said iirst cylinders above said rst pistonsto lower said plungers and sequentially contact said guide rings withthe molds, retain the guide rings in contact with the molds under thepressure from said accumulator means while the plungers move downwardlyduring a plunger press period and remain in the molds during a plungerdwell period, and means for supplying hydraulic pressure `from saidsource each cycle of operation of the machine to said rst cylindersbelow said first pistons to raise said plungers and guide rings from theWare and from contact with the molds respectively.

2. In a glassware forming machine having a pair of glassware formingmolds, a dual press plunger mechanism comprising a supporting headmounted above said molds and having a pair of cylinders, a piston ineach of said cylinders, a piston rod extending downwardly from each ofsaid pistons, a plunger supported by each of said piston rods andadapted to enter said molds, a second cylinder slidable on each of saidpiston rods, a guide ring supported by each of said second cylinders, asecond piston on said piston rod within each of said second cylinders,accumulator means providing constant pressure in said second cylindersbelow the second pistons therein, a source of hydraulic pressure, meansfor supplying hydraulic pressure from said source to said rst cylindersabove said rst pistons to lower said plungers land sequentially contactsaid guide rings with the molds and move said plungers downwardly intothe molds, and means for supplying hydraulic pressure from said sourceto said lrst cylinders below said lrst pistons to raise said plungersand guide rings.

3. A glassware forming machine having an indexable table and a pluralityof glassware forming molds carried thereby at circumferentially spacedstations of said table, a press plunger mechanism comprising asupporting head mounted above said table and having a cylinder, a pistonin said cylinder, a piston rod extending downwardly from said piston, aplunger supported by said piston rod and adapted to enter the mold, oneat a time, a second cylinder slidable on said piston rod, a guide ringsupported by said second cylinder, a second piston on said piston rodwithin said second cylinder, accumulator means providing constantpressure in said second cylinder below the second piston there-in, asource of hydraulic pressure, means for supplying hydraulic pressurefrom said source each cycle of operation of the machine to said lirstcylinder above said first piston to lower said plunger and sequentiallycontact said guide ring with the mold, retain the guide ring in Contactwith the mold under the pressure4 from said accumulator means while theplunger moves downwardly during a plunger press period and remains inthe mold during a plunger dwell period, and means for supplyinghydraulic pressure from said source each cycle of operation of themachine to said first cylinder below said rst piston to raise saidplunger and guide ring from the ware and from contact with the moldrespectively.

4. In a glassware forming machine having an indexable table and aplurality of glassware forming molds carried thereby and arranged inpairs at circumferentially spaced stations of said table, a dual pressplunger mechanism comprising a supporting head mounted above said tableand having a pair of cylinders, a piston in each of said cylinders, apiston rod extending downwardly from each of said pistons, a plungersupported by each of said piston rods and adapted to enter the molds,one pair at a time, a second cylinder slidable on each of said pistonrods, a guide ring supported by each of said second cylinders, a secondpiston on said piston rod within each of said second cylinders,accumulator means providing constant pressure in said second cylindersbelow the second pistons therein, a. sonrceof hydraulic pressure, meansfor supplying hydraulic pressure from said source each cycle ofoperation of the machine to said first cylinders above said rst pistonsto lower said plungers and sequentially contact said guide rings withthe molds, retain the guide rings in contact with the molds under thepressure from said accumulator means while the plungers move downwardlyduring a plunger press period and remain in the molds during a plungerdwell period, means for supplying hydraulic pressure from said sourceeach cycle of operation of the machine to said first cylinders belowsaid irst pistons to raise said plungers and guide rings from the wareand from contact with the molds respectively, and hydraulic motors inthe lines supplying hydraulic pressure to said rst cylinders above saidfirst pistons.

5. In a glassware forming machine having an indexable table and aplurality of glassware forming molds carried thereby and arranged inpairs at circumferentially spaced stations of said table, a dual pressplunger mechanism comprising a supporting head mounted above said tableand having a pair of cylinders, a piston in each of said cylinders, apiston rod extending downwardly from each of said pistons, a plungersupported by each of said piston rods and adapted to enter the molds,one pair at a time, a second cylinder slidable on each of said pistonrods, a guide ring supported by each of said second cylinders, a secondpiston on said piston rod within each of said second cylinders,accumulator means providing constant pressure in said second cylindersbelow the second pistons therein, a source of hydraulic pressure, meansfor supplying hydraulic pressure from said source each cycle ofoperation of the machine to said irst cylinders above said rst pistonsto lower said plungers and sequentially contact said guide rings withthe molds, retain the guide rings in contact with the molds under thepressure from said accumulator means While the plungers move downwardlyduring a plunger press period and remain in the molds during a plungerdwell period, means for supplying hydraulic pressure from said sourceeach cycle of operation of the machine to said rst cylinders below saidrst pistons to raise said plungers and guide rings from the ware andfrom contact with the molds respectively, and hydraulic motors in thelines supplying hydraulic pressure to said first cylinders above saidfirst pistons, said hydraulic motors being disconnectably connectedtogether.

6. A glassware forming machine having a pair of glassware forming molds,a dual press plunger mechanism comprising a supporting head mountedabove said molds and having a pair of cylinders, a piston in each ofsaid cylinders, a piston rod extending downwardly from each of saidpistons, a glass-forming plunger supported by each of said piston rodsand adapted to enter the molds, one pair at ya time, a second cylinderslidable on each of said piston rods, a guide ring supported by each ofsaid second cylinders, a second piston on said piston rod within each ofsaid second cylinders, accumulator means providing constant pressure insaid second cylinders below the second pistons therein, a source ofhydraulic pressure, means for supplying hydraulic pressure from saidsource to said first cylinders above said first pistons to lower saidplungers and sequentially Contact said guide rings with the molds,retain the guide rings in contact with the molds under the pressure fromsaid accumulator means while the plungcrs move downwardly during aplunger press period and remain in the molds during a plunger dwellperiod, means for supplying hydraulic pressure from said source to saidfirst cylinders below said first pistons to raise said plungers andguide rings from the ware and from contact with the molds respectively,and hydraulic motors in the lines supplying hydraulic pressure to saidfirst cylinders above said rst pistons, said hydraulic motors beingdisconnectably coupled together.

a'rsaeer 7. In a glassware forming machine having an indexable table anda plurality of glassware forming molds carried thereby and arranged inpairs at circumferentially spaced stations of said table, a dual pressplunger mechanism comprising a supporting head, a plurality of posts forsupporting said head. said head being vertically movable thereon, saidposts being threaded, nuts rotatable thereon and operatively connectedtogether for simultaneous rotation by means of a sprocket on each nutand a chain around the sprockets whereby said nuts may be rotated forelevating said head and thereby adjusting it relative to the table ofsaid glassware forming machine, said head having a pair of cylinders, apiston in each of said cylinders, a piston rod extending downwardly fromeach of said pistons, a plunger supported by each of said piston rodsand adapted to enter the molds, one pair at a time, a second cylinderslidable on each of said piston rods, a guide ring supported by each ofsaid second cylinders, a second piston on said piston rod within each ofsaid second cylinders, accumulator means providing constant pressure insaid second cylinders below the second pistons therein, a source ofhydraulic pressure, means for supplying hydraulic pressure from saidsource each cycle of operation of the machine to said rst cylindersabove said iirst pistons to lower said plungers and sequentially contactsaid guide rings with the molds, retain the guide rings in contact withthe molds under the pressure from said accumulator means while theplungers move downwardly during a plunger press period and remain in themolds during a plunger dwell period, and means for supplying hydraulicpressure from said source each cycle of operation of the machine to saidfirst cylinders below said first pistons to raise said plungers andguide rings from the ware and from contact with the molds respectively.

8. In a glassware forming machine having a pair of glassware formingmolds, a dual press plunger mechanism comprising a supporting head, aplurality of posts for supporting said head, said head being verticallymovable thereon, said posts being threaded, nuts rotatable thereon andoperatively connected together for simultaneous rotation whereby saidnuts may be rotated for elevating said head and thereby adjusting itrelative to said glassware forming molds, said head having a pair ofcylinders, a piston in each of said cylinders, a piston rod eX- tendingdownwardly from each of said pistons, a plunger supported by each ofsaid piston rods and adapted to enter said molds, a second cylinderslidable on each of said piston rods, a guide ring supported by each ofsaid second cylinders, a second piston on said piston rod within each ofsaid second cylinders, accumulator means providing constant pressure insaid second cylinders below the second pistons therein, a source ofhydraulic pressure, means for supplying hydraulic pressure from saidsource to said iirst cylinders above said first pistons to lower saidplungers and sequentially contact said guide rings with the molds,retain the guide rings in contact with the molds under the pressure fromsaid accumulator means while the plungers move downwardly during aplunger press period and remain in the molds during a plunger dwellperiod, and means for supplying hydraulic pressure from said source tosaid first cylinders below said first pistons to raise said plungersfrom the ware and said guide rings from contact with said molds.

9. In a glassware forming machine having an indexable table and aplurality of glassware forming molds carried thereby and arranged inpairs at circumferentially spaced stations of said table, a dual pressplunger mechanism comprising a supporting head, a plurality of posts forsupporting said head, said head being vertically movable thereon, saidposts being threaded, nuts rotatable thereon and operatively connectedtogether for simultaneous rotation by means of a sprocket on each nutand a chain around the sprockets whereby said nuts may be rotated forelevating said head and thereby adjusting it relative -to the table ofsaid glassware forming machine, said head having a pair of cylinders, apiston in each of said cylinders, a piston rod extending downwardly fromeach of said pistons, a plunger supported by each of said piston rodsand adapted to enter the molds, one pair at a time, a second cylinderslidable on each of said piston rods, a guide ring supported by each ofsaid second cylinders, a Isecond piston on each of said piston rodswithin said second cylinders, accumulator means providing constantpressure in said second cylinders below the second pistons therein, asource of hydraulic pressure, means for supplying hydraulic pressurefrom said source each cycle of operation of the machine to said iirstcylinders above said rst pistons Ito lower said plungers andsequentially contact said guide rings with the molds, retain the guiderings in contact with the molds under the pressure from said accumulatormeans while the plungers move downwardly during a plunger press periodand remain in the molds during a plunger dwell period, means forsupplying hydraulic pressure from said source each cycle of operation ofthe machine to said first cylinders below said first pistons to raisesaid plungers and guide rings from the ware and from contact with themolds respectively, and hydraulic motors in the lines supplyinghydraulic pressure to said first cylinders above said irst pistons.

10. In a glassware forming machine having a pair of glassware formingmolds, a dual press plunger mechanism comprising a supporting head, aplurality of posts for supporting said head, said head being verticallymovable thereon, said posts being threaded, nuts rotatable thereon andoperatively connected together for simultaneous rotation by means of asprocket on each nut and a chain around the sprockets whereby said nutsmay be rotated for elevating said head and thereby adjusting it relativeto the tableV of said glassware forming molds, said head having a pairof cylinders, a piston in each of said cylinders, a piston rod extendingdownwardly lfrom each of said pistons, a plunger supported by each ofsaid piston rods and adapted to enter said molds, a second cylinderslidable on each of said piston rods, a guide ring supported by each ofsaid second cylinders, a second piston on each of said piston rodswithin said second cylinders, accumulator means providing constantpressure in said second cylinders below the second pistons therein, asource of hydraulic pressure, means for supplying hydraullc pressurefrom said source to said first cylinders above said rst pistons to lowersaid plungers and sequentially contact saidl guide rings with the molds,retain the guide rings in contact with the molds under the pressure fromsaid accumulator means while the plungers move downwardly during aplunger press period and remain 1n the molds during a plunger dwellperiod, means for supplying hydraulic pressure from said source to saidiirst cylinders below said first pistons to raise said plungers andguide rings from the Ware and from contact with the molds respectively,and hydraulic motors in the lines supplying hydraulic pressure to saidirst cylinders above said first pistons, said hydraulic motors beingdisconnectably coupled together.

1l. A glassware forming machine having an indexable table and aplurality of glassware forming molds carried thereby and arranged inpairs at circumferentially spaced stations of said table, a dual pressplunger mechanism comprising a supporting head, a plurality of posts forsupporting said head, said head being vertically movable thereon, saidposts being threaded, nuts rotatable thereon and operatively connectedtogether for simultaneous rotation whereby said nuts may be rotated forelevating said head and thereby adjusting it relative to the table ofsaid glassware forming machine, said head having a pair of cylinders, apiston in each of said cylinders, a piston rod extending downwardly fromeach of said pistons, a plunger supportedby each of said piston rods andadapted to enter the molds, one pair at a time, a second cylinderslidable on each of said piston rods, a guide ring supported by each ofsaid second cylinders, a second piston on each of said piston rodswithin said second cylinders, accumulator means providing constantpressure in said second cylinders below the second pistons therein, asource of hydraulic pressure, means for supplying hydraulic pressurefrom said source each cycle of operation of the machine `to said firstcylinders above said first pistons to lower said plungers, means forsupplying hydraulic pressure from said source each cycle of operation ofthe machine to said first cylinders below said first pistons to raisesaid plungers and guide rings, and hydraulic motors in the linessupplying hydraulic pressure to said first cylinders above said rstpistons, said hydraulic motors being disconnectably connected together.

l2. In a glassware forming machine having an indexable table and aplurality of glassware forming molds carried thereby and arranged inpairs at circumferentially spaced stations of said table, a dual pressplunger mechanism comprising a supporting head mounted above said tableand having a pair of cylinders, a piston in each of said cylinders, apiston rod extending downwardly from each of said pistons, a Vplungersupported by each of said piston rods and adapted to enter the molds,one pair at a time, a second cylinder slidable on each of said pistonrods, a guide ring supported by each of said second cylinders, a secondpiston on each of said piston rods within said second cylinders,accumulator means providing constant pressure in said second cylindersbelow the second pistons therein, a source of hydraulic pressure, meansfor supplying hydraulic pressure from said source each cycle ofoperation of the machine to said first cylinders above said tirstpistons to lower said plungers and sequentially said guide rings, meansfor supplying hydraulic pressure from said source each cycle ofoperation of the machine to said first cylinders below said firstpistons to raise said plungers and guide rings, and means for chargingsaid accumulatore from said source of hydraulic pressure including avalve and a hose selectively connectable with said accumulators.

13. In a glassware forming machine having an indexable table and aplurality of glassware forming molds carried thereby and arranged inpairs at circumferentially spaced stations of said table, a dual pressplunger mechanism comprising a supporting head mounted above said tableand having a pair of cylinders, a piston in each of said cylinders, apiston rod extending downwardly from each of said pistons, a plungersupported by each of said piston rods and adapted to enter the molds,one pair at a time, a second cylinder slidable on each of said pistonrods, a guide ring supported by each of said second cylinders, a secondpiston on each of said piston rods within said second cylinders,accumulator means providing constant pressure in said second cylindersbelow the second pistons therein, a source of hydraulic pressure, meansfor supplying hydraulic pressure from said source each cycle-ofoperation of the machine to said tirst cylinders above said irst pistonsto lower said plungers and sequentially Contact said guide rings withthe molds, retain the guide rings in contact with the molds under thepressure from said accumulator means while the plungers move downwardlyduring a plunger press period and remain in the molds during a plungerdwell period, means for supplying hydraulic pressure from said sourceeach cycle of operation of the machine to said first cylinders belowsaid first pistons to raise said plungers and guide rings from the wareand from contact with the molds respectively, and means for selectivelycharging said accumulators from said source of hydraulic pressure.

14. In a glassware forming machine having a glassware forming mold, apress plunger mechanism comprisingV a cylinder, a piston in saidcylinder, a piston rod extendingv downwardly from said piston, a plungersupported by said piston rod and adapted to enter the mold, a secondcylinder slidable on said piston rod, a guide yring Supported by saidsecond cylinder, a second piston on said piston rod within said secondcylinder, accumulator means providing constant pressure in said secondcylinder below the second piston therein, a source of hydraulicpressure, means for supplying hydraulic pressure from said source tosaid iirst cylinder above said first piston to lower said plunger, meansfor supplying hydraulic pressure from said source to said rst cylinderbelow said first piston to raise said plunger and guide ring, and meansfor charging said accumulator from said source of hydraulic pressureincluding a valve and a hose connectable with said accumulator.

l5, In a glassware forming machine having an indexable table and aplurality of glassware forming molds carried thereby and arranged inpairs at circumferentially spaced stations of said table, a dual pressplunger mechanism comprising a supporting head'mounted above said tableand having a pair of cylinders, a piston in each of said cylinders, apiston rod extending downwardly from each of said pistons, a plungersupported by cach of said piston rods and adapted to enter the molds,one pair at a time, a second cylinder slidable on each of'said pistonrods, a guide ring supported by each of said second cylinders, a secondpiston on eachv of said piston rods within said second cylinders,accumulator means providing constant pressure in said second cylinders,below the second pistons therein, a source of hydraulic pressure, meansfor supplying hydraulic pressure from said source each cycle ofoperation of the machine to said rst cylinders above said first pistonsto lower said plungers and said guide rings, means for supplyinghydraulic pressure from said source each cycle of operation of themachine to said rst cylinders below said rst pistons to raise saidplungers and guide rings, hydraulic motors in the lines supplyinghydraulic pressure to said iirst cylinders above said iirst pistons,said hydraulic motors being disconnectably connected together, and meansfor charging said accumulators from said source of hydraulic pressureincluding a valve and a host selectively connectable with saidaccumulators.

16. In a glassware forming machine having an index able table and aplurality of glassware forming molds carried thereby and arranged inpairs at circumferentially spaced stations of said table, a dual pressplunger mechanism comprising a supporting head mounted above said tableand having a pair of cylinders, a piston in each of said cylinders, apiston rod extending downwardly fromcach of said pistons, a plungersupported by each of said piston rods and adapted to enter the molds,one pair at a time, a second cylinder slidable on each of said pistonrods, a guide ring supported by each of said second cylinders, a secondpiston on each of said piston rodswithin said second cylinders,accumulator means providing constant pressure in said second cylindersbelow the second pistons therein, a source of hydraulic pressure, meansfor supplying hydraulic pressure from said source to said rst cylindersabove said first pistons to lower said plungers and sequentially contactsaid guide rings with the molds, retain the guide rings in contact withthe molds under the pressure from said accumulator means while theplungers move downwardly during a plunger press period and remain in themolds during a plunger dwell period, means for supplying hydraulicpressure from said source to said iirst cylinders below said iirstpistons to raise said plungers and guide rings from the ware and fromContact with the molds respectively, hydraulic motors in the linessupplying hydraulic pressure to said lirst cylinders above said irstpistons, said hydraulic motors being disconnectably connected together,`and means for charging said accumulators from said soure of hydraulicpressure.

17. In a glassware forming machine having an indexil *i amasar abletable and a plurality of glassware forming molds carried thereby andarranged in pairs at circumferential-Hy spaced stations of said table, adual press plunger mechanism comprising a supporting head, a pluralityof posts for supporting said head, said head being vertically movablethereon, said posts being threaded, nuts rotatable thereon andoperatively connected together for simultaneous rotation by means of asprocket on each nut and a chain around the sprockets whereby said nutsmay be rotated for elevating said head and thereby adjusting it relativeto the table of said glassware forming machine, said head having a pairof cylinders, a piston in each of said cylinders, a piston rod extendingdownwardly from each of said pistons, a plunger supported by each ofsaid piston rods and adapted to enter the molds, one pair at a time, asecond cylinder slidable on each of said piston rods, a guide ringsupported by each of said second cylinders, a second piston on each ofsaid piston rods within said second cylinders, accumulator meansproviding constant pressure in said second cylinders below the secondpistons therein, a source of hydraulic pressure, means for supplyinghydraulic pressure from said source each cycle of operation of themachine to said lirst cylinders above said iirst pistons to lower saidplungers and sequentially contact said guide rings with the molds,retain the guide rings in contact with the molds under the pressure fromsaid accumulator means while the plungers move downwardly during aplunger press period and remain in the molds during a plunger dwellperiod, means for supplying hydraulic pressure from said source eachcycle of operation of the machine to said iirst cylinders below said rstpistons to raise said plungers and guide rings from the ware and fromContact with the molds respectively, and means for charging saidaccumulators from said source of hydraulic pressure including a valveand a hose selectively connectable with said accumulators.

18. ln a glassware forming machine having a glassware forming mold, apress plunger mechanism comprising a supporting head, a plurality ofposts for supporting said head, said head being vertically movablethereon, means for simultaneously elevating said head at each of saidposts and thereby adjusting it relative to said glassware Jforming mold,said head having a cylinder, a piston in said cylinder, a piston rodextending downwardly from said piston, a plunger supported by saidpiston rod and adapted to enter said mold, a second cylinder slidable onsaid piston rod, a guide ring supported by said second cylinder, asecond piston on said piston rod within said second cylinder,accumulator means providing constant pressure in said second cylinderbelow the second piston therein, a source of hydraulic pressure, meansfor supplying hydraulic pressure from said source to said iirst cylinderabove said iirst piston to lower said plunger and sequentially Contactsaid guide ring with the mold, retain the guide ring in contact with themold under the pressure from said accumulator means while the plungermoves downwardly during a plunger press period and remains in the moldduring a plunger dwell period, means for supplying hydraulic pressurefrom said source to said first cylinder below said iirst piston to raisesaid plunger and guide ring from the ware and from contact with the moldrespectively, and means for charging said accumulator from said sourceor hydraulic pressure including a v avlve and a hose connectable withsaid accumulator.

19. A glassware forming machine having an indexable table and aplurality of glassware forming molds carried thereby and arranged inpairs at circunrterentially spaced stations of said table, a dual pressplunger mechanism comprising a supporting head, a plurality of posts forsupporting said head, said head being vertically movable thereon, saidposts being threaded, nuts rotatable thereon and operatively connectedtogether for simultaneous rotation by means of a sprocket on each nutand a chain around the sprockets whereby said nuts may be rotated forelevating said head and thereby adjusting said plungers relative to thetable of said glassware forming machine mounted above said table, saidhead having a pair of cylinders, a piston in each of said cylinders, apiston rod extending downwardly from each of said pistons, a plungersupported by each of said piston rods and adapted to enter the molds,one pairrat a time, a second cylinder slidable on each of said pistonrods, a guide ring supported by each of said second cylinders, a secondpiston on each of said piston rods within said second cylinders,accumulator means providing constant pressure in said second cylindersbelow the second pistons therein, a source of hydraulic pressure, meansfor supplying hydraulic pressure from said source to said firstcylinders above said first pistons to lower said plungers and said guiderings, means for supplying hydraulic pressure from said source to saidlirst cylinders below said iirst pistons to raise said plungers and saidguide rings, and means for charging each of said accumulators from saidsource of hydraulic pressure.

20. In a glassware forming machine having an indexable table and aplurality of glassware forming molds carried thereby and arranged inpairs at circumferentially spaced stations of said table, a dual pressplunger mechanism comprising a supporting head mounted above said tableand having a pair of cylinders, a piston in each of said cylinders, apiston rod extending downwardly from each of said pistons, a plungersupported by each of said piston rods and adapted to enter the molds,one pair at a time, a second cylinder slidable on each of said pistonrods, a guide ring supported by each of said second cylinders, a secondpiston on each of said piston rods within said second cylinders,accumulator means providing constant pressure in said second cylindersbelow the second pistons therein, a source of hydraulic pressure, meansfor supplying hydraulic pressure from said source each cycle ofoperation of the machine to said first cylinders above said firstpistons to lower said plungers and sequentially contact said guide ringswith the molds, retain the guide rings in Contact with the molds underthe pressure from said accumulator means while the plungers movedownwardly during a plunger press period and remain in the molds duringa plunger dwell period, means for supplying hydraulic pressure from saidsource each cycle of operation of the machine to said first cylindersbelow said first pistons to raise said plungers and guide 'rings fromthe ware and from contact with the molds respectively, means at thetake-out station of said glassware forming machine for elevating theWare with respect to the molds comprising an ejection plunger in eachmold, a cylinder, a pair of pistons therein, means for adjusting saidpistons toward or away from each other to reduce or increase theirstroke in said cylinder, and means fixed relative to said cylinders forengaging said ejection plungers, said last means comprising a pair ofpivoted arms, spring means biasing said arms to ejection plungerengaging position, said arms being movable when struck by an obstructionagainst the bias of said springs.

2l. In a glassware `forming machine having an indexable table and aplurality of glassware forming molds carried thereby and arranged inpairs at circumferentially spaced stations of .said table, a dual pressplunger mechanisrn comprising a supporting head mounted a-bove saidtable and having a pair of cylinders, a piston in each of saidcylinders, a piston rod extending downwardly `from each of said pistons,a plunger supported by each of said piston rods and adapted to enter themolds, one pair at a time, a second cylinder slidable on each of saidpiston rods, a guide ring supported by each of said second cylinders, asecond piston on each of said pist-on rodsv within said secondcylinders, accumulator means providing constant pressure in said secondcylinders below the second pistons therein, a source of hydraulicpressure, means for supplying hydraulic pressure from said source eachcycle of operation of the machine lto said rst cylinders above said irstpistons to lower said plungers and sequentially contact said guide ringswith the molds, re-

15 tain the guide rings in contact with the molds under the pressureIfrom said accumulator means while the plungers move downwardly during aplunger press period and remain in the molds during a plunger dwellperiod, means for supplying hydraulic pressure from said source eachcycle of operation of the machine -to said rst cylinders below saidfirst pistons to raise said plungers and guide rings from the ware andfrom contact with the Amolds respectively, means at the take-ont stationof said glassware forming machine for elevating the ware with respecttothe molds comprising an ejection plunger in each mold, a cylinder, apair of pistons therein, means for adjusting said pistons toward or awayfrom each other to reduce or increase ltheir stroke in said cylinder,and means fixed relative to said cylinders for engaging said ejectionplungers.

22. In a glass-ware forming machine having a pair of glassware formingmolds, a dual press plunger mechanism comprising a supporting headhaving a pair of cylinders, a piston in each of said cylinders, a pistonrod extending downwardly trom each of said pistons, a plunger supported.by each of said piston rods and adapted to enter the molds, one pair ata time, a second cylinder slidable on each of said piston rods, a guidering supported by each of sai-d se-cond cylinders', a second piston oneach of said piston rods within said second cylinders, accumulator meansproviding constant pressure in said second cylinders below the secondpistons therein, a source of hydraulic pressure, means for supplyinghydraulic pressure from said source each cycle of operation of themachine to said first 4cylinders above said -tirst pistons to lower saidplungers and sequentially contact said guide rings with the molds,retain the guide rings in contact with the molds under the pressure fromsaid accumulator means Awhile the plungers `move downwardly during aplunger press period and remain yin the molds during a plunger dwellperiod, means for supplying hydraulic pressure from said source eachcycle of operation of the machine to said rst cylinders below said firstpistons to raise said plungers and guide rings from the ware and fromcontact with the molds respectively, and means at the take-out stationof said glassware lforming machine for elevating the ware with respectto the molds whereby they may be grasped by the take-out tongs of atake-out device.

23. In a glassware forming machine having an indexable table and aplurality of glassware forming molds carried thereby at spaced stationsof said table, a press plunger mechanism comprising a supporting headmounted above said table and having a cylinder, a piston in saidcylinder, a piston rod extending downwardly from said piston, a plungersupported by said piston rod. and adapted to `enter the molds, one at atime, a second cylinder slidable on said piston rod, a guide .ringsupported by said second cylinder, a second piston on said piston rodwithin said second cylinder, accumulator means providingconstantpressure .in said second cylinder below the second pistontherein, a source of hydraulic pressure, means for supplying'hydraulicpressure from said source to said first cylinder above said first pistonto lower said plunger and guide ring, means `for supplying hydraulicpressure from said source to said first cylinder below said first pistonto raise said plunger and guide ring, means at the takeout station ofsaid glassware forming machine for elevating the ware with respect tothe mold comprising an ejection plunger, a cylinder, a pair or" pist-onstherein, means for adjusting said pistons toward or away from each otherto reduce or increase their stroke in said cylinder, and means `fixedrelative to said pistons for engaging said ejection plunger, said lastmeans comprising a pivoted arm, spring means biasing said arm toejection plunger engaging position, said arm being :movable when struckby an obstruction against lthe bias of said spring.

24, In a glassware forming machine having an indexable table and aplurality of glassware yforming molds carried thereby and arranged inpairs at circumferentially spaced stations of said table, a dual pressplunger mechanism comprising a supporting bead mounted above said tableand having a pair of cylinders, a piston in each of said cylinders, apiston rod extending downwardly yfrom each of said pistons, a plungersupported by each of Said piston rods and adapted to enter the molds,one pair at a time, a second cylinder slidable on each of said pistonrods, a guide ring supported by each, of said second cylinders, a secondpiston on each of said piston rods within said second cylinders,accumulator means providing constant pressure in said second cylindersbelow the second pistons therein, a source or' hydraulic pressure, meansfor supplying hydraulic pressure from said source each cycle ofoperation of the machine to said irst cylinders above said first pistonsto lower said plungers and sequentially contact said guide rings withthe molds, retain the guide rings in contact with the molds under thepressure from said accumulator means while the plungers move downwardlyduring a plunger press period and remain in the molds during a plunger'dwell period, means for supplying hydraulic pressure from said sourceeach cycle of operation of the machine to said first cylinders belowsaid lirst pistons to raise said plungers and guide rings from the wareand from contact with the molds respectively, hydraulic motors in thelines supplying hydraulic pressure to said irst cylinders above saidfirst pistons, said hydraulic motors being -disconnectably connectedtogether, means at the take-out station of said glassware formingmachine for elevating the ware with respect to the molds comprising anejection plunger in each mold, a cylinder, a pair of pistons therein,means for adjusting said pistons toward or away from each other toreduce or increase their stroke in said cylinder, and means fixedrelative to said cylinders for engaging said ejection plungerscomprising a pair of pivoted arms, spring -means biasing said arms toejection plunger engaging position, said arms being movable against thebias of said springs when struck by an obstruction.

25. A glassware forming machine having an indexable table and aplurality of glassware forming molds carried thereby and arranged inpairs at circumferentially spaced stations of said table, a dual pressplunger mechanism comprising a supporting head mounted above said tableand having a pair of cylinders, a piston in each of said cylinders, apiston rod extending downwardly from each of said pistons, a plungersupported by each of said piston rods and adapted to enter the molds,one pair at a time, a second cylinder slidable on each of said pistonrods, a guide ring supported by each of said second cylinders, a secondpiston on each of said piston rods within said second cylinders,accumulator means providing constant pressure in said second cylindersbelow the second pistons therein, a source of hydraulic pressure, meansfor supplying hydraulic pressure from said source each cycle ofoperation of the machine to said first cylinders above said firstpistons to lower said plungers and said guide rings, means for supplyinghydraulic pressure from said source each cycle of operation of themachine to said first cylinders below said first pistons to raise saidplungers and said guide rings, hydraulic motors in the lines supplyinghydraulic pressure to said first cylinders above said first pistons,said hydraulic motors being disconnectably coupled together, means atthe take-out station of said glassware forming machine for elevating theware with respect to lthe molds comprising an ejection plunger in eachmold, a cylinder, a pair of pistons therein, and means for adjustingsaid pistons toward or away from each other to reduce or increase theirstroke :in said cylinder.

